Test: Percentages II - Ambitious

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Question 1:   Write as a percentage 1 2 5
14%
140%
30%
50%
Question 2:   Find a number if 4% of that number is 15
37.5
375
60
6
Question 3:   In a park grows 300 oaks. How many trees are in the park, if the oaks make up 25% of all trees?
650
600
1200
120
Question 4:   Find 8% of 4km
320m
32m
400m
3km
Question 5:   Cost of manufacturing parts at the factory is 680 pounds. The introduction of new technologies has allowed to reduce the cost by 2% . What is the cost of manufacturing parts after changes?
£666.4
£672
£666
£670
Question 6:   When grinding wheat, the yield of flour is 80% . How much wheat should be used to get 610kg kg of flour?
762kg
690kg
700kg
762.5kg
Question 7:   The width of the rectangle is 6cm and is 32% of its length. Find the perimeter of the rectangle.
49.5cm
48cm
49cm
47cm
Question 8:   The alloy of gold and silver contains 40% of gold. What is the mass of the alloy, if the gold weighs 335g ?
837.5g
820g
800g
810g
Question 9:   The height of the rectangular parallelepiped is 5cm . It is 40% of the length and 60% of the width. Find the volume of the parallelepiped.
625c m 3
625 m 3
620c m 3
623c m 3
Question 10:   Find 35% of the sum of 1 13 14 and 3 4
4
0.4
1 4
0.04